I definately understand both sides of the debate. I can offer you this: I have been keeping saltwater for over 15 years. I have had over 10 SW
tanks at a single time and a fishroom of 48 aquariums. I have never acclimated a single fish and have never had a fish experience any form of shock. I do not mail order fish. All my fish are from LFS
. However, my LFS
also does not acclimate and they receive fish from all over the US, so I would expect this to be similar to mail ordering a fish to your home.
In the cold winter months, i will let the fish bag sit in my home for 20 minutes or so until the water rooms up toward room temperature. However, I do not float and do not combine water.
Also, i just recently brought my pond Shubunkins in for the winter. The pond temperature was below 60. The tank inside 75. No acclimation. Just threw 'em right in! No problems...